Philip

Thursday, June 03, 2010

Our collection of vegetable scraps was taking over the freezer (it had been several months since I last made stock), and we had just received our first box of produce from our CSA, so it was time to make a soup.

Last night I made the vegetable stock from the veggies in the freezer (see my previous post on vegetable stock). I discarded some of the celery and the carrot peels, because they were looking pretty bad. I used salt, black peppercorns, and bay leaves.

Today I made the borsch. Of course there are a bazillion recipes for borsch. I checked with More-with-less, which has two borsch recipes (really, only two!?), and cooked some combination of the two. I started with the stock, a bit of vinegar and the beets. After that had cooked for a while I added tomato sauce, cabbage, potatoes, onions, onion stalks, beet greens, dill and a tea ball containing red pepper, black peppercorns and bay leaves.

Sunday, April 25, 2010

So I bought this cheap little network-attached storage (NAS) device the other day (http://bit.ly/dns-323). It's got a 500MHz ARM processor and 64MB memory. There's a nice wiki (http://wiki.dns323.info/) with howtos for the power user.

It includes a web interface, UPnP server, iTunes server, FTP server, Samba server, and add-ons from D-Link that you can install. The latest firmware runs a 2.6.12 kernel. I installed a debian chroot onto it and so now I can ssh into it and run a bittorrent client.

I've read that with both drives spinning, it will will use roughly 25W.

So, I store almost everything on the file server and access files over the network.

RAID is for redundancy, not backup! Therefore, I opted to format the drives separately and backup one drive to the other. I heard about a nice idea to buy another drive, store it offset, and rotate it with the backup drive every month. I might consider doing this in the future.

Friday, January 29, 2010

I have used software RAID in Linux in the past, via mdadm. I believe it has resulted in lost data more times than it has saved me from losing data. I have since switched to ZFS (on FreeBSD) and have survived many situations that could have resulted in lost data.

I'd like to be able to switch back to using Linux, so I have been doing some research on Linux RAID. Today I came across this article, which contains the following text:

For a RAID-1 config with two disks...If both blocks were readable (i.e. were read from the disk, without the disk indicating any sort of error condition), but there was a mis-compare, then the data from the highest-numbered disk is copied to the other disk. This results in a 50-50 chance that good data was over-written by bad. Furthermore, this is done silently: no syslog messages indicate either a mis-compare, or that a repair action was taken.

That's right! mdadm doesn't checksum your data to prevent this from happening! ZFS does. So, for example, you could write random data to one of your drives:

This is the time when Ada begins trying food. She has shown the signs that she is ready: sitting up, grabbing everything and putting it in her mouth, gagging; these skills develop simultaneously in babies. Also, she just turned 6 months old, which is a common time for breastfed babies to start trying food.

This period is all about tasting. She eats very little. She plays with her food. This is baby-led weaning.

Ada has tried apples, grapefruit, lemon, carrot, squash, celery, tomato, and avocado. She is eager to taste anything. She puckered up when she tried lemon, but kept going back for more.

When appropriate, we give her whole chunks of food. Otherwise, as in the case of squash, we cook the food. We place the food in front of her and let her grab it and put it in her mouth. If she wants to grab the food but has trouble, we will either place it on a spoon and hand the spoon to her (when the food is mushy) or hold the food in front of her and let her guide our hands to her mouth (when the food is slippery or hard to handle).

Her two bottom teeth enable her to scrape off bits of the hard food (apples, celery, etc.). She works the food around in her mouth a bit, tasting it. Usually the food makes it way out her mouth again (that's a reflex that babies have). She swallows some food, somewhat by accident, and that passes through her without being digested.

Wednesday, January 13, 2010

Organ Damage In Rats From Monsanto GMO Corn: "jenningsthecat writes 'A study published in December 2009 in the International Journal of Biological Sciences found that three varieties of Monsanto genetically-modified corn caused damage to the liver, kidneys, and other organs of rats. One of the corn varieties was designed to tolerate broad-spectrum herbicides, (so-called 'Roundup-ready' corn), while the other two contain bacteria-derived proteins that have insecticide properties. The study made use of Monsanto's own raw data. Quoting from the study's 'Conclusions' section: 'Our analysis highlights that the kidneys and liver as particularly important on which to focus such research as there was a clear negative impact on the function of these organs in rats consuming GM maize varieties for just 90 days.' Given the very high prevalence of corn in processed foods, this could be a real ticking time bomb. And with food manufacturers not being required by law to declare GMO content, I think I'll do my best to avoid corn altogether. Pass the puffed rice and pour me a glass of fizzy water!'

Saturday, January 09, 2010

Golden Ratio Discovered In a Quantum World: "FiReaNGeL writes 'Scientists have for the first time observed a nanoscale symmetry hidden in solid state matter. 'In order to study these nanoscale quantum effects, the researchers have focused on the magnetic material cobalt niobate. It consists of linked magnetic atoms, which form chains just like a very thin bar magnet, but only one atom wide.' By artificially introducing more quantum uncertainty, the researchers observed that the chain acts like a nanoscale guitar string. The first two notes show a perfect relationship with each other. Their frequencies (pitch) are in the ratio of 1.618, which is the golden ratio famous from art and architecture. The observed resonant states in cobalt niobate are a dramatic laboratory illustration of the way in which mathematical theories developed for particle physics may find application in nanoscale science and ultimately in future technology.'